There are many recent studies which use so-called shift formalism to study the energy loss.
The work in Ref.[1]} is based on
shift formalism and describes the transverse momentum (\(p_{\rm {T}}\) ), rapidity (\(y\) )
and centrality dependences of the measured jet nuclear modification factor (\(R_{\rm {AA}}\) )
in PbPb collisions at LHC.
They assume that the energy loss is given by a power law in terms of \(p_{\rm T}\) , the value of power
index is obtained between 0.4 to 0.8 by fitting the \(R_{\rm {AA}}\)  as a function of \(p_{\rm {T}}\) 
and centralities.
They also found that the energy loss linearly increases with number of participants.
Using the same method they study the magnitude and the colour charge dependence of the
energy loss in PbPb collisions at LHC energies using the measured data of the inclusive
jet suppression [2]}.
The authors of the Ref.[3]} work on inclusive charged particle spectra
measured in the range (\(5 < p_{\rm T} < 20\)  GeV/\(c\) ) in heavy ion collisions at RHIC and LHC.
They assume that the energy loss linearly increases with \(p_{\rm T}\)  and pathlength.
